. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 214.—Cronai'tium asclepiadeum oji Ct/nanch^m Vincetoxicum. The uredo- sori sliow as spots, the teleutospore-sori as processes on the leaves, (v. Tubeuf del) also on Gentiana asclepiadea). The aecidial stage, known as Peridermium Oornui Eostr. et Kleb. produces a blister-rust on the bark of Pinus Fig. 215.—Ci-onartium asclepiadeum. Section of a Cynanchum leaf. The leaf-parenchyma is permeated with m
. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 214.—Cronai'tium asclepiadeum oji Ct/nanch^m Vincetoxicum. The uredo- sori sliow as spots, the teleutospore-sori as processes on the leaves, (v. Tubeuf del) also on Gentiana asclepiadea). The aecidial stage, known as Peridermium Oornui Eostr. et Kleb. produces a blister-rust on the bark of Pinus Fig. 215.—Ci-onartium asclepiadeum. Section of a Cynanchum leaf. The leaf-parenchyma is permeated with mycelium, and sori are formed on the lower epidermis. A, uredo-sorus; B, teleutospore-sorus, many spores of which have germinated and given off promyceHa with sporldia. (v. Tubeuf del.) Brown spots may be found on the leaves of the Cynanchum''- during July, August, and September (Fig. 214). On examina- tion of the spots with a lens, the leaf-epidermis will be found ^A very common plant in Europe though not indigenous to Britain. (Edit.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tubeuf, Karl, freiherr von, 1862-1941; Smith, William G. London ; New York [etc. ] : Longmans, Green & co.
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